title: [Unusual motifs of the nucleotide sequence adjacent to the putative transcription initiation site in the rDNA intergenic spacer of diploid wheat Triticum urartu Thum. ex Gandil, T. boeoticum Boiss, and T. monococcum L].
abstract: In the intergenic spacer (IGS) of rDNA of diploid wheats Triticum urartu, T. boeoticum, and T. monococcum, the uncommon motives adjacent to the site of transcription initiation (TIS) are revealed. They are located in the region from -6 to +1 relative to the putative TIS and are not encountered in cereals studied earlier. In T. urartu and T. boeoticum, the motif TACTATG has been revealed, in T. monococcum--TATTATG, while diploid Aegilops speltoides has the motif TATAGTA, typical of the remaining cereal species. The TIS-surrounding rDNA IGS region of diploid wheats was compared to the correspondent known rDNA IGS regions of different plant and animal species.
authors.affiliation: Department of Biochemistry and Cytochemistry, Ufa Research Center, Russian Academy of Sciences, Russia.
authors.forename: E D
authors.initials: ED
authors.lastname: Akhunov
authors.forename: A V
authors.initials: AV
authors.lastname: Chemeris
authors.forename: V A
authors.initials: VA
authors.lastname: Vakhitov
mesh_terms: D001483:Base Sequence; D004275:DNA, Ribosomal; D004171:Diploidy; D008969:Molecular Sequence Data; D010442:Peptide Chain Initiation, Translational; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D013045:Species Specificity; D014158:Transcription, Genetic; D015533:Transcriptional Activation; D014908:Triticum / Q000235:genetics*
chemical_list: D004275:DNA, Ribosomal
vernacular_title: Neobychnye motivy nukleotidnoĭ posledovatel'nosti MGS rDNK diploidnykh pshenits Triticum urartu Thum. ex Gandil., T. boeoticum Boiss. i T. monococcum L. prilegaiushchie k prepolagaemomu saĭtu initsiatsii transkriptsii.